Assistive Listening Knowledge Base

QuestionPartly answered

Who designs and installs assistive listening, and what training or certification exists?

From https://assistivelisteningknowledgebase.org/questions/installers-and-training/ · updated 13 October 2026

  • Affects venues, specifiers, installers, listeners
  • 17 sources
  • Updated
  • First published

Technologies: Auracast, Hearing loops, Infrared, RF/FM, Shared

In brief

Specialist installers, AV designers and system integrators can draw on manufacturer courses, ISCVE loop training and assessment, and AVIXA credentials. These routes cover course completion, professional knowledge and membership; testing an installed system is a separate task. Bluetooth SIG product qualification and venue registration serve different purposes again. Guidance calls for site tests, documented commissioning and staff training. Field audits found working systems as well as serious faults, but do not establish which installer qualification leads to better results.

Why it matters

A venue needs someone who can assess the building, design and install the system, test the completed audio path and teach staff to run it. The Hearing Loss Association of America (HLAA), a nonprofit advocacy organisation, recommends checking an installer's training, references, experience in similar buildings, supplier support and permission to do the work locally. The UK industry code distributed by ISCVE extends the work through documented testing and handover. An installer credential and a commissioning report answer different parts of that brief1,2.

What the evidence shows

Who does the work

The roles overlap. ISCVE's loop courses address designers, installers, engineers, consultants and local authorities. AVIXA describes CTS-D holders as including AV designers and engineers, and CTS-I holders as including installation technicians, system integrators and system commissioners. Swiss directory guidance points venue operators to experienced hearing-system specialists for planning, installation and commissioning. These sources identify relevant roles and skills; they do not establish a single mandatory job title across countries3,4,5.

Training and credentials: what each one covers

RoutePublished scopeWhat the evidence establishes
Manufacturer loop coursesAmpetronic describes installation, commissioning and troubleshooting, with in-person and online courses. Contacta covers loop design, standards, site surveys, meters and background noise, with infrared and RF also in its training scope.Practical technology training is available from equipment makers. Contacta gives completion certificates and a badge identifying training and support by the company. Neither public page supplies an independent comparison of installation outcomes6,7.
ISCVE loop courses, UKSeparate design/installation and measurement/certification courses cover metalwork, spill, field strength, audio inputs, test signals, measurement positions and records.The published syllabuses distinguish designing a loop from measuring it. ISCVE's catalogue describes its courses as CPD accredited; the pages do not publish pass criteria3.
ISCVE Hearing Loop Assessment Scheme, UKA register of members offering loop testing and assessment. The entry description names passing a loop course, three recent successful installations confirmed by clients, and specified standards-committee experience, without clearly separating the admission routes.This is a specialist assessment scheme. The published description does not give comparative field results or a detailed practical examination rubric8.
ISCVE Registered Installers, UKGeneral installer membership for companies using ISCVE member engineers, or members working on their own, with a directory and technical support.This is a separate scheme from hearing-loop assessment. Premium membership buys additional directory prominence; the page does not require testing of each installation9.
AVIXA CTS, CTS-D and CTS-IGeneral AV knowledge, design, and installation respectively. CTS is required before the specialised examinations; CTS-I includes system tests, training and closeout documentation.AVIXA describes the CTS programme as ANAB-accredited to ISO 17024. These are broad AV credentials; the overview does not establish expertise in a particular loop or Auracast installation4.
InfoComm educationAVIXA's 2026 programme listed an Auracast session on design in the 2.4 GHz environment, with a site-survey document and one CTS or CTS-D renewal unit.The listed presenters were employees of manufacturer Williams AV. This documents continuing education; the programme does not describe a practical installer examination10.

Bluetooth SIG programmes

The SIG, an industry association funded by member companies and the owner of the Auracast trademark, offers implementation guides and a product qualification route. Its developer page requires Bluetooth product qualification and links Auracast trademark use to the Public Broadcast Profile and brand requirements. This process concerns the product. The public-location programme separately covers deployment, registration and branding; its archived page still says a deployment guide will be published. Neither page describes an installer examination11,12.

Venue registration can be submitted by venue staff or an installer with the venue's approval. The terms address trademark rights and continuing broadcast quality, but name no specific measurement protocol. The SIG's venue-success guidance also asks staff to try receivers and learn to help visitors. These programme pages do not provide commissioning results for an individual venue; the UK industry code separately recommends documented performance testing13,14,2.

National and local checking networks

Alongside the UK schemes, Switzerland's IGGH hearing-system directory recruits hearing-device users to assess systems from personal experience and participate in workshops. Its operator guidance distinguishes free, independent listener checks arranged through regional Pro Audito associations from paid specialist help with faults and new installations. These pages describe a user-checking network and technical support, without claiming a national installer licence or publishing a technical examination for testers15,5.

In the US, HLAA asks venues to check that an installer may legally work in their area and notes that some states require additional licensing. That is advocacy guidance to check local requirements; it does not establish that a manufacturer's completion certificate authorises electrical or installation work everywhere1.

Who should commission and hand over the system

The UK industry code recommends performance tests by the installer or system specifier after installation, combining listening and objective appraisal as appropriate to the system. It defines a competent person through current training, experience, access to tools and information, and ability to perform the task; its informative Annex F names ISCVE as an organisation for assessing competence. The code does not require a separate external assessor for every job. Its detailed test coverage is discussed in What commissioning tests and pass limits will the standards require?2.

For loops, HLAA recommends on-site measurements before pricing, documented verification against IEC 60118-4, integration with the venue audio system and a listening check by an experienced hearing-aid user while the installer is present. It warns that a computer model cannot reveal magnetic background noise and asks for an electrician to investigate that noise. These are HLAA's recommendations; its statement about the standard's final listening test has not been checked here against the full standard1.

Handover also has a named recipient: the venue operator. The industry code calls for operating instructions, as-fitted drawings, coverage maps, commissioning results and control settings, plus a demonstration. At least one venue representative should be trained and equipped for routine tests, and customer-facing staff should receive refresher training. The SIG likewise asks staff to practise with Auracast receivers. Installation training and daily operating skills cover different tasks2,14.

What field checks actually show

A government-funded, in-house audit reported in 2008 covered all 31 maintained loop areas in Australia's Parliament House, using a procedure that adjusted amplifiers before measurement. Its table placed nine areas in the highest coverage grade of 80–100%, three in 20–80%, three below 20%, and 16 in the lowest grade, defined as low base levels with excessive attenuation. The Cabinet Room, one of the nine top-graded areas, was only partly tested with low-level pink noise; its appendix also refers to earlier commissioning by T4. The authors blamed loop layouts and recommended that rework be supervised and commissioned by a broadcast officer experienced with loops. These were signal-level and background-noise checks in one building, without frequency-response testing in the stated procedure; the grades are not a complete IEC assessment or a national failure rate16.

The independent Lets Loop Southampton and Healthwatch volunteer audit visited 295 shops in 2017, finding loops in 39. It reported faulty loops at ASDA, Body Shop and John Lewis, and repairs following feedback at the latter two. The publisher-hosted PDF reports loops and signs at all five Costa branches visited; a version held by Healthwatch reports four of five. Separate audit funding was not specified; the report describes a £4,000 GoSouthampton contribution for businesses to obtain loops. It gives no aggregate working-loop count or measurement results, so 39 of 295 measures provision, not installation success17.

Where sources disagree

The sources describe different kinds of evidence: Contacta describes a certificate for completing its course, AVIXA describes examinations of professional AV knowledge, and the industry code asks for a report on the actual system. The ISCVE general installer directory also has a paid prominence tier. These descriptions do not conflict, but none makes the credentials interchangeable, and the sources do not provide evidence for ranking the routes by listening outcomes7,4,2,9.

The field audits show both usable systems and faults despite installed equipment. They do not record installer qualifications systematically or separate every design error from later damage, adjustment and upkeep. Their results support checking the finished system and its operation, while leaving the effect of a particular training scheme unresolved16,17.

What would settle it

Independent audits could link installers' training and assessed skills to commissioning measurements, listener checks and later service performance, recording venue difficulty and maintenance arrangements. The two audits here show why those outcomes matter, while the course and credential pages supply no such comparisons. Equivalent evidence is needed for Auracast installations: product qualification and venue registration do not publish those venue-level results16,17,7,4,11,13.

Planning while it is open

  1. Check relevant experience and permission to work locally. Ask for references from similar buildings, training in the proposed technology and access to technical support. Establish who will design, install and test the system1,2.
  2. Read the credential's scope. Distinguish course completion, an AV examination, specialist assessment registration and general installer membership; request the evidence relevant to the job rather than relying on directory prominence7,4,8,9.
  3. Specify site checks and a commissioning record. For loops, include the on-site investigation and experienced-user listening check HLAA recommends. For any system, agree performance tests and document results for the venue1,2.
  4. Give venue staff the means to keep it working. Require operating instructions, settings, coverage information, a demonstration, staff training and someone equipped to carry out routine checks. For Auracast, include hands-on receiver practice2,14.

Sources

  1. Best Practices for Hearing Loop Installation. Hearing Loss Association of America (contact: Juliëtte Sterkens, HLAA hearing loop advocate). Hearing Loss Association of America (Get in the Hearing Loop), 28 October 2021. Nonprofit advocacy (Hearing Loss Association of America, a US consumer organisation; guidance from its hearing loop programme) ↩︎ https://www.hearingloss.org/wp-content/uploads/best-practices-for-hearing-loop-installation.pdf
  2. Code of Practice for the Design and Operation of Assistive Listening Systems, Issue 1. Audio Industries Committee on Assistive Listening Systems. Audio Industries Committee on Assistive Listening Systems; distributed by the Institute of Sound, Communications and Visual Engineers (UK), December 2023. Trade body (Audio Industries Committee on Assistive Listening Systems, an audio industry committee; distributed by the Institute of Sound, Communications and Visual Engineers; the code names no funder) ↩︎ https://iscve.org.uk/standards/assistive-listening-guide-and-code-of-practice/
  3. Assistive Listening Technology. ISCVE. Institute of Sound, Communications and Visual Engineers (UK), undated (read 13 October 2026). Trade body (ISCVE, the professional membership institute that delivers the courses) ↩︎ https://iscve.org.uk/training-development/training-courses/assistive-listening-technology/
  4. Certification Overview. AVIXA, undated (read 13 October 2026). Trade body (AVIXA, the audiovisual industry association that operates the credential programme) ↩︎ https://www.avixa.org/training-certification/certification
  5. Für Anlagenbetreibende. IGGH (Höranlagenverzeichnis). IGGH (Swiss hearing-system directory), undated (read 13 October 2026). Nonprofit advocacy (IGGH hearing-system directory; the page acknowledges financial supporters and gives no separate funding for the guidance) ↩︎ https://hoeranlagen.ch/faq/index.php?zid=2
  6. Installation and support. Ampetronic, undated (read 13 October 2026). Manufacturer (Ampetronic, which makes and sells hearing loop equipment and supplies the training) ↩︎ https://www.ampetronic.com/installation-and-support/
  7. Training. Contacta Inc., undated (read 13 October 2026). Manufacturer (Contacta Inc., which sells assistive listening equipment and provides the courses) ↩︎ https://contactainc.com/services/training/
  8. Hearing Loop Assessment Scheme. ISCVE (Institute of Sound, Communications and Visual Engineers). Institute of Sound, Communications and Visual Engineers (UK), 14 January 2020. Trade body (Institute of Sound, Communications and Visual Engineers, a UK membership body for engineers in the sound, communications and visual systems industry, which runs the scheme and its hearing loop training courses) ↩︎ https://iscve.org.uk/hearing-loop-assessment-scheme/
  9. ISCVE Registered Installers. ISCVE. Institute of Sound, Communications and Visual Engineers (UK), undated (read 13 October 2026). Trade body (ISCVE, which charges membership fees and operates the directory) ↩︎ https://iscve.org.uk/iscve-registered-installers/
  10. Explore Education Sessions on Audio at InfoComm 2026. Iulia Popescu (AVIXA). AVIXA, 8 June 2026. Trade body (AVIXA event education article; the Auracast session described is presented by two Williams AV employees, an assistive listening manufacturer) ↩︎ https://www.avixa.org/explore/articles/explore-education-sessions-on-audio-at-infocomm-2026
  11. Auracast - For Developers. Bluetooth SIG, undated (read 13 October 2026). Trade body (Bluetooth SIG programme material; the SIG is an industry association funded by its member companies and owns the Auracast trademark) ↩︎ https://www.bluetooth.com/auracast/developers/
  12. Auracast for public locations. Bluetooth SIG, undated (read 13 October 2026). Trade body (Bluetooth SIG marketing material; the SIG is an industry association funded by its member companies and owns the Auracast trademark) ↩︎ https://www.bluetooth.com/auracast/public-locations/
  13. Auracast location registration. Bluetooth SIG, undated (read 13 October 2026). Trade body (Bluetooth SIG programme terms; the SIG is an industry association funded by its member companies, which owns the Auracast trademark) ↩︎ https://www.bluetooth.com/auracast/location-registration/
  14. Auracast venue success: 5 steps to a successful launch of Auracast at your location. Bluetooth SIG, undated (read 9 October 2026). Trade body (Bluetooth SIG marketing material; the SIG is an industry association funded by its member companies and owns the Auracast trademark) ↩︎ https://www.bluetooth.com/auracast/venue-success/
  15. Höranlagen-Testende werden. IGGH (Höranlagenverzeichnis). IGGH (Swiss hearing-system directory), undated (read 13 October 2026). Nonprofit advocacy (IGGH hearing-system directory; the page acknowledges financial supporters but does not identify separate funding for tester training) ↩︎ https://hoeranlagen.ch/testende.php
  16. Audio Frequency Induction Loops Audit in Parliament House, for the Purpose of OH&S Compliance (version 0.1). Ciolek M, Covington J (Broadcasting Infrastructure and Support, Department of Parliamentary Services). Parliament of Australia, Department of Parliamentary Services (published with the Senate Finance and Public Administration committee's 2011-12 Budget Estimates documents for the parliamentary departments), December 2008. Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff) ↩︎ https://aph.gov.au/~/media/Estimates/Live/fapa_ctte/estimates/bud_1112/parliamentary/p21d.ashx
  17. Hearing Loops in Central Southampton: Auditing hearing loops in shops and restaurants across central Southampton. Lets Loop Southampton and Healthwatch Southampton. Lets Loop Southampton, 2018. Independent (Lets Loop Southampton and Healthwatch Southampton volunteer audit; separate audit funding is not specified; the report describes a £4,000 GoSouthampton contribution for businesses to obtain loops) ↩︎ https://letsloopsouthampton.co.uk/wp-content/uploads/2018/05/Hearing-Loops-in-Central-Southampton-Report.pdf

Change log

  • Published with 17 sources.
  • Audited citations; clarified credential scope, assessment entry wording and venue testing, qualified the Parliament audit results, and added supporting record passages.
  • Second citation check distinguished the Parliament report date from its undated measurements and reconciled supporting record limitations.
  • Independent audit qualified the Costa branch count after checking two versions of the Southampton report.

Cite this question

Equal Access Audio. “Who designs and installs assistive listening, and what training or certification exists?” Assistive Listening Knowledge Base. Updated 13 October 2026. https://assistivelisteningknowledgebase.org/questions/installers-and-training/ (accessed the date you read it).

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